Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Analog Line Level Preamplifiers , Passive Pre-amps, Crossovers, etc.

Stumped---Floppy Drive
Stumped---Floppy Drive
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 1st March 2008, 09:50 PM   #1
BluesMagoos is offline BluesMagoos  United States
diyAudio Member
Join Date: Apr 2006
Location: seattle
Default Stumped---Floppy Drive

Iím working on another floppy drive turntable motor. This one is the Jumbo 5.25 drive. I thought the motor would run on 5 volts like the 3.5 floppy. That didnít work so I tried 12 volts, no go. If I use both voltages together it runs. Using two voltages really complicates a simple project.
I need a solution if there is one.
  Reply With Quote
Old 2nd March 2008, 05:35 PM   #2
EC8010 is offline EC8010  United Kingdom
diyAudio Moderator Emeritus
EC8010's Avatar
Join Date: Jan 2003
Location: Near London. UK
Measure how much current it draws from the 5V rail, then use a regulator from the 12V rail to make 5V. (You need the current measurement to decide whether the 5V regulator needs a heatsink.)
The loudspeaker: The only commercial Hi-Fi item where a disproportionate part of the budget isn't spent on the box. And the one where it would make a difference...
  Reply With Quote
Old 2nd March 2008, 06:03 PM   #3
poynton is offline poynton  United Kingdom
diyAudio Member
poynton's Avatar
Join Date: Mar 2005
Location: UK
As far as I recall, all 5.25" floppy drives used +5v and +12v rails.

I cannot remember seeing any with only +5v or +12v .

(owned a computer repair business for 9 years)
  Reply With Quote
Old 4th March 2008, 09:27 PM   #4
CBRworm is offline CBRworm  United States
diyAudio Member
Join Date: Jan 2007
Location: S. Florida
It seems to me that a lot of the old floppy drive motors were either stepper motors or servo controlled with a an external speed sensor on the flywheel.
  Reply With Quote
Old 5th March 2008, 12:58 AM   #5
BluesMagoos is offline BluesMagoos  United States
diyAudio Member
Join Date: Apr 2006
Location: seattle
The disk spin motors are 3 phase brushless (blm) 360/300 rpm. The read/write motors are steppers. Hard to find disk motor projects, stepper motor projects are many.
Dual voltage is the working answer. 12V plus 5V makes it happy.
Beware of bad bearings in these motors. About half of my motors have bad bearings and are not usable (noise). My good motors run my TT fine. Iíve ordered some new bearings.
Thanks for the replies on the dual voltage question.
  Reply With Quote


Stumped---Floppy DriveHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Can I use a computer PSU with a floppy/DVD motor drive TT? morepower4me Analogue Source 19 25th March 2009 04:04 AM
Floppy disk "rim drive?" arnoldc Analogue Source 8 23rd March 2009 07:33 AM
Floppy drive motor BluesMagoos Analogue Source 20 13th June 2007 05:56 PM
5 1/4" floppy drive EC8010 Swap Meet 3 5th April 2007 07:50 AM
Floppy help ... boris333 Everything Else 22 6th September 2004 06:05 PM

New To Site? Need Help?

All times are GMT. The time now is 05:42 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio